arm64: dts: rockchip: Remove unused i2c2 node from rk3568-mecsbc

One of the pins of i2c2 is actually in use as chip select 0 for spi0.
The chip select 0 is used for an FRAM chip, which will be added in the
next patch.

Remove the i2c2 node from the rk3568-mecsbc device tree.

Signed-off-by: David Jander <david@protonic.nl>
Signed-off-by: Jonas Rebmann <jre@pengutronix.de>
Link: https://lore.kernel.org/r/20241219-mb85rs128ty-mecsbc-v1-1-77a0e851ef19@pengutronix.de


Signed-off-by: Heiko Stuebner <heiko@sntech.de>